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Remove one wholly-unused and buggy routine and some nearby alternative symbols.

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While here, also correct a comment that seems to imply that this file is
NetBSD's all-singing, all-dancing locore.S, rather than our conservative set of
assembly support routines.
This commit is contained in:
jmallett 2012-11-17 23:53:12 +00:00
parent 2382fd4109
commit 00a8daa950
1 changed files with 1 additions and 60 deletions
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61
sys/mips/mips/support.S
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@ -83,8 +83,7 @@
*/
/*
* Contains code that is the first executed at boot time plus
* assembly language support routines.
* Contains assembly language support routines.
*/
#include "opt_ddb.h"
@ -289,7 +288,6 @@ END(copyerr)
#ifdef __mips_n64
LEAF(fuword64)
ALEAF(fuword)
ALEAF(fuiword)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
@ -305,7 +303,6 @@ END(fuword64)
LEAF(fuword32)
#ifndef __mips_n64
ALEAF(fuword)
ALEAF(fuiword)
#endif
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
@ -319,7 +316,6 @@ ALEAF(fuiword)
END(fuword32)
LEAF(fusword)
ALEAF(fuisword)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
@ -332,7 +328,6 @@ ALEAF(fuisword)
END(fusword)
LEAF(fubyte)
ALEAF(fuibyte)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
@ -441,30 +436,10 @@ XLEAF(casuword)
END(casuword64)
#endif
#if 0
/* unused in FreeBSD */
/*
* Have to flush instruction cache afterwards.
*/
LEAF(suiword)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
GET_CPU_PCPU(v1)
PTR_L v1, PC_CURPCB(v1)
PTR_S v0, U_PCB_ONFAULT(v1)
sw a1, 0(a0) # store word
PTR_S zero, U_PCB_ONFAULT(v1)
j _C_LABEL(Mips_SyncICache) # FlushICache sets v0 = 0. (Ugly)
li a1, 4 # size of word
END(suiword)
#endif
/*
* Will have to flush the instruction cache if byte merging is done in hardware.
*/
LEAF(susword)
ALEAF(suisword)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
@ -478,7 +453,6 @@ ALEAF(suisword)
END(susword)
LEAF(subyte)
ALEAF(suibyte)
PTR_LA v0, fswberr
blt a0, zero, fswberr # make sure address is in user space
nop
@ -1140,39 +1114,6 @@ LEAF(longjmp)
li v0, 1 # longjmp return
END(longjmp)
LEAF(fusufault)
GET_CPU_PCPU(t0)
lw t0, PC_CURTHREAD(t0)
lw t0, TD_PCB(t0)
li v0, -1
j ra
END(fusufault)
/* Define a new md function 'casuptr'. This atomically compares and sets
a pointer that is in user space. It will be used as the basic primitive
for a kernel supported user space lock implementation. */
LEAF(casuptr)
PTR_LI t0, VM_MAXUSER_ADDRESS /* verify address validity */
blt a0, t0, fusufault /* trap faults */
nop
GET_CPU_PCPU(t1)
lw t1, PC_CURTHREAD(t1)
lw t1, TD_PCB(t1)
PTR_LA t2, fusufault
PTR_S t2, U_PCB_ONFAULT(t1)
1:
ll v0, 0(a0) /* try to load the old value */
beq v0, a1, 2f /* compare */
move t0, a2 /* setup value to write */
sc t0, 0(a0) /* write if address still locked */
beq t0, zero, 1b /* if it failed, spin */
2:
PTR_S zero, U_PCB_ONFAULT(t1) /* clean up */
j ra
END(casuptr)
LEAF(mips3_ld)
.set push
.set noreorder